Multi-refractive Index Lens Structure for Coaxiality and Space Reduction
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Solution Overview
Problem
Existing multi-layered lens structures face challenges in achieving high coaxiality during assembly, leading to increased complexity and space requirements, and require adhesive materials to prevent deviation along the optical axis.
Innovation Solution
A lens structure formed by materials with different refractive indexes, comprising a sphere, a first lens, and a separation layer, where the first lens is formed on the sphere using injection molding, with a light absorption curve and a transparent section to enhance light condensing effects, and optionally a second lens is added to enclose the sphere and separation layer, allowing for improved coaxiality and reduced space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-layered lenses are assembled sequentially on a lens holder, then optical aberration can be eliminated, but the assembly process becomes tedious and space consumption increases
Solution Approach 1:
The patent combines multiple lens layers into a single integrated lens structure where different refractive index materials are molded together as one piece. This eliminates the need for sequential assembly of multiple separate lenses, reducing assembly complexity while maintaining the optical aberration correction benefits of multi-layered designs.
Solution Approach 2:
The patent embeds one lens material within another lens material with different refractive indexes, creating a nested structure where inner lens elements are contained within outer lens elements. This nested arrangement achieves multi-layered optical functionality in a single integrated component, eliminating the need for separate assembly steps.
2Reliability
If multi-layered lenses are assembled sequentially, then optical path control is achieved, but coaxiality requirements increase and assembly deviation risks increase
Solution Approach 1:
By merging multiple lens layers into a single molded structure, the patent ensures that all optical elements are inherently coaxial since they are formed as one integrated piece. This eliminates the coaxiality alignment issues that arise when assembling multiple separate lenses, while maintaining precise optical path control through the different refractive index materials.
3Manufacturing precision
If composite lens is used to replace multi-layered lens assembly, then coaxiality is improved, but manufacturing steps become tedious and adhesive materials are required
Solution Approach 1:
The patent merges multiple lens elements into a single molded structure made of materials with different refractive indexes. This integration eliminates the need for separate manufacturing steps and adhesive materials required in traditional composite lens assembly, while maintaining high coaxiality as all elements are formed together in one molding process.
4Stability of the object's composition
If adhesive materials are used to increase adhesive force among lenses, then lens assembly stability is improved, but the number of materials and manufacturing complexity increase
Solution Approach 1:
The patent combines multiple lens elements into a single molded structure, eliminating the need for adhesive materials to hold separate lenses together. The integrated structure provides inherent stability without requiring additional bonding materials, thereby reducing the total number of materials needed while maintaining assembly stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed lens structure achieves high coaxiality, reduces space requirements, and enhances light absorption efficiency, effectively addressing issues of stray light, astigmatism, and optical aberration, thereby improving imaging quality.
Implementation Method 1
The sphere is transparent and is provided with a first refractive index... The first lens is transparent and is provided with a second refractive index which is different from the first refractive index of the sphere... After passing through the second portion of the sphere to form the first light condensing effect
Implementation Method 2
The first lens is provided with a first light absorption curve opposite to the first portion of the sphere... a light beam will pass through the transparent section to enter the first lens and then pass through the first light absorption curve to form a second light condensing effect
Data Source
AI summary
A lens structure formed by materials in different refractive indexes includes a sphere, a first lens and a separation layer which is disposed between the sphere and the first lens. The sphere and the first lens have a different refractive index and the sphere is a round ball. The first lens is formed on the sphere that part of the sphere is exposed out of the first lens, and the first lens includes a first light absorption curve. The separation layer includes a transparent section opposite to the first light absorption curve. When a light beam passes through the second portion of the sphere to form a first light condensing effect and enter the sphere, the light beam will then pass through the transparent section to enter the first lens, forming a second light condensing effect after passing through the first light absorption curve.